The Xuni is a variation of the CooKit panel-type cooker: slightly wider than the CooKit, the Xuni provides more pot space. The Xuni was developed as part of the Proyecto Olla Sola (involving the Mexican Fund for the Conservation of Nature) using cardboard and a variety of reflective materials. During testing, the Xuni reached an approximate maximum temperature of 85° C (185° F) in about three hours.